490473387 has 14 divisors (see below), whose sum is σ = 735374772. Its totient is φ = 326981772.

The previous prime is 490473383. The next prime is 490473421. The reversal of 490473387 is 783374094.

Added to its reverse (783374094) it gives a square (1273847481 = 35691²).

It is a happy number.

It is not a de Polignac number, because 490473387 - 2² = 490473383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (490473383) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 335673 + ... + 337130.

Almost surely, 2^490473387 is an apocalyptic number.

490473387 is a deficient number, since it is larger than the sum of its proper divisors (244901385).

490473387 is an frugal number, since it uses more digits than its factorization.

490473387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672821 (or 672806 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The square root of 490473387 is about 22146.6337622673. The cubic root of 490473387 is about 788.6273160752.

Adding to 490473387 its reverse (783374094), we get a square (1273847481 = 35691²).

The spelling of 490473387 in words is "four hundred ninety million, four hundred seventy-three thousand, three hundred eighty-seven".